JPS6099059A - Embroidering machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an embroidery machine having an embroidery grid that is movable vertically and horizontally via a drive unit, the embroidery machine having an embroidery grid whose periphery is closed. It has a frame2. of the type in which the embroidery grid frame is supported by a vertical drive on a support having a height n 1ilj, and the horizontal drive is adapted to act on at least one side beam of the embroidery grid frame; Ran into.

Due to the long length of the embroidery grate in conventional technology embroidery machines and therefore the long length of the embroidery grate, the stability of the embroidery grate is always a problem, and in order to avoid particularly messy or distorted embroidery patterns, relatively short travel adjustment linkages of the embroidery grate are required. It must be the same size at all locations.

Embroidery grids and, in particular, product beams of such great length and arranged one above the other in several levels have a large mass - this mass can be moved by rapid successive movement linkages during embroidery. There must be. As a result, in the embroidery machines known up to now, torsional phenomena occur in the plane of the embroidery grid, in particular "QriPir parallelogram displacements", that is, angular deviations at the corner connections of the closed embroidery grid frame. This phenomenon is caused, inter alia, by the fact that the elements transmitting the horizontal interlock to the grid, i.e. almost one or two parallel horizontally extending racks or the like, are always at the same height with respect to the stationary machine frame, whereas This occurs when the embroidery grid is turned or positioned lower as the embroidery progresses. This shifts the point of action of the horizontal interlock introduction relative to the upper and lower horizontal frame members which transmit the centering or horizontal movement of the embroidery grate during operation. This causes the angular deviation to become larger or smaller depending on the position of the embroidery grid. Although the disadvantages of parallelogram movement can be slightly alleviated by arranging two mutually parallel elements, for example racks or the like, on the side beams of the embroidery grid frame for the introduction of a horizontal drive. , but cannot be excluded.

It is certainly possible to increase the stability of the embroidery grid frame by significantly reinforcing the corner joints. However, such a configuration necessarily reduces the length of the embroidery grid.
This will significantly increase the amount or mass. Moreover, especially at the commercial embroidery speeds desired today, 1. An unbearable load is applied to the drive unit.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a high embroidery speed and a long embroidery grid in which torsion phenomena or angular deviations in the plane of the embroidery grid are practically eliminated and which are suitable for the embroidery grid. The object of the present invention is to improve the above-mentioned type of embroidery machine so that a simple configuration can be selected.

Means for Solving the Problem The means taken to solve the above-mentioned problem is that at least one '1111 beam of the embroidery grid frame is held on a guide rail so as to be movable in the vertical direction;
At least one horizontal support projects from the vertical guide rail, the support together with the guide rail;
The support forms a T-shaped component that is resistant to bending and is guided horizontally along a stationary machine frame, and the horizontal drive comprises one or more guide rails and supports. It is to be secured to the structural members of the

Furthermore, in order to obtain a satisfactory guidance, the length of the support is greater than half the length of the guide rail, and in the case of the U, approximately 1.5 times that half length. .

If only one support is arranged (if the support is arranged preferably approximately in the middle of the guide rail and protrudes from it into the embroidery grid, it may obstruct the path for the embroidery tool). There is a danger that this will occur.

These disadvantages can be overcome by an advantageous embodiment of the invention, in which two horizontal supports projecting from the vertical guide rail and extending parallel to each other at a distance, each of which is rigid against bending. This can be avoided by being combined with a guide rail. Such an arrangement also makes it possible to fasten the guide part for the horizontal guidance of the support directly to the present horizontal support of the machine frame.

In order to guide the horizontal interlocking along the frame transmitting the embroidery grid frame, in each case one horizontal rail is arranged, and in the - plane at least at the cantilevered end of the support or supports, On the other hand, in the area of the vertical guide rail, guide rollers are supported on both sides of the horizontal stationary rail.

How long is the horizontal drive or guide rail to be able to go on any steep slope? -'L is preferably engaged in the center, and certainly in the area of the support.

the horizontal drive engages the guide rail on the side opposite the support(s) and the support(s) are aligned parallel to the f-plane of the embroidery grid and within the confines of the embroidery grid; rush into.

In order to be advantageously adapted to the already prepared embroidery frame 5+Alt, one or more supports project horizontally from the guide rail in the direction away from the embroidery grid frame into the embroidery grid frame plane, at least one of which a support supports a rack profile, to which the horizontal drive is engaged, and at least one support for guiding the support or supports along the stationary machine frame. In the region of both ends Tf15, pairs of idler rollers supported on the machine frame are supported on both sides of one or more supports or rack profiles.

It is furthermore advantageous if the side beams are supported on the inside of the guide rails via rollers, each pair of rollers being arranged at the upper and lower ends of the side beams, and the guide rails being A shaped rail is mounted which is designed as a U-shaped cross section and has a guide surface over the travel length of the roller pair in the end region of the guide rail.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embroidery machine essentially consists of a stationary machine frame and an embroidery grid capable of horizontal and vertical afiltration. Of the stationary machine frame, only the section of the supporting member 2 running approximately vertically is shown. In the region of the upper end of such a support member 2 a height-adjustable traverse 3 is held, which traverse is height-adjustable by means of a vertical drive and can be used for embroidery, as will be further explained below. Form a support for the lattice. The traverse 3 is held by a guide member 4. A rank 5 is secured to the guide member 4, and a pinion 6 is engaged with this rack. Depending on the vertical adjustment of the embroidery grate, the rack "5" is moved upwards or moved downwards by means of a corresponding rotational movement of the pinion 6, so that the traverse 3 is correspondingly raised or lowered.

A guide strip 7 is fixed to the traverse 3, and the embroidery grid frame 1 is attached to the guide roller 8 on this guide strip.
is suspended through.

In this case, one pair of idle rollers is arranged in each case, and one guide strip 7 is arranged on each side of this pair of guide rollers.

This ensures that the height of the embroidery grid frame 1 can be adjusted in a simple manner.

The embroidery grid frame 1 has both side beams 9,10
and upper and lower vertical rails 11. A product beam 12 of a known type is supported on the side beams 9,10. A further rail 13 is disposed vertically movable in the area between the side beams 9 , 10 and has an adjustable support 14 for the product beam 12 . Optionally, this rail can also engage a corresponding guide strip 7 in addition to the main suspension.

According to the invention, the lateral beams 9 of the embroidery grid frame 1 are held movably in the vertical direction on guide rails 15. A horizontal support 16 projects from such a vertical idle rail 15 and is guided horizontally in a stationary machine frame. The horizontal drive part of the embroidery grid frame 1 is connected to the guide rail 15 and the support body 1b via the pinion 17 and the rank 18.
It engages a component 19 formed from. The guide rail 15 and the support 16 are connected to each other in such a way that they together form a T-shaped component 19 that is resistant to bending. This allows the forces for the horizontal movement of the embroidery grid frame to be transmitted uniformly over the entire height of the embroidery grid, so that the embroidery grid does not twist. Indeed, in order to fit the small patterns to be embroidered, it is necessary to carry out exactly the same movements at each point of the embroidery grid plane. By special guidance of the support 16 and the rigidly connected guide rail 15,
It can be clearly seen that one side of the embroidery grid frame 10 is loaded.

In order to obtain perfect guidance, it is advantageous if the length of the support 16 is greater than the length of half the guide rail 150. Furthermore, it is advantageous if the length of the support 16 corresponds to approximately 1.5 times the half length of the guide rail 150. Of course, at the connection between the support 16 and the guide rail 15 (
Figure 1) Adequate corner reinforcement is taken into consideration.

In order to guide the support 16 along the stationary machine frame, a horizontal rail 20 is arranged, which means that this rail is permanently connected to the stationary machine frame. Support 160 cantilevered end and vertical guide rail 1
5, guide roller pairs 21 and 22 are provided on both sides of the rail 200. Due to the relatively large distance between these two pairs of guide rollers 21, 22, a well-ordered stiffness is achieved in the embroidery grid frame 1 during the transmission of horizontal movements.

As shown in the embodiment of FIGS. 1 and 2, the binion 17
If the horizontal drive formed by the ranks 18 and 18 engages approximately in the middle of the length of the guide rail 15, in short in the area of the support 16 connected to the guide rail 15, the tilting is caused by the aforementioned is still excluded. In such a first embodiment, the horizontal drive unit is connected to the support 16.
It engages with the guide rail 15 on the opposite side. This allows support 16 to be oriented parallel to the plane of the embroidery grid and to extend into the area of the embroidery grid. In such areas, there is generally sufficient space to accommodate such structures, so there is no need to enlarge the entire structure of the embroidery machine.

On the other hand, the support, which projects approximately in the middle of the embroidery grid height into the area of the embroidery grid as described above, interferes with the manipulation of the embroidery tool.

The double arrangement shown in the variant embodiment of FIG. 6 therefore makes it possible to obviate this drawback. Instead of one support 160 projecting from approximately the center of the guide rail 15, as shown in the drawing, a support 28.2
Two supports 28, 29, designated 9, are provided, which extend parallel to each other and at a distance from each other, projecting from the guide rail 15, and each support is T-shaped. Moreover, it is advantageously connected to the guide rail via a corner reinforcing plate 27 in a manner that is resistant to bending. All parts shown in the embodiment according to FIG. 6 are designated with the same reference numerals as those shown in the embodiment according to FIGS. 1 and 2, except that the support is of double construction.

The side beams 9 are supported inside the guide rails 15 via pairs of rollers 23, 24, with each pair of rollers being arranged at the upper and lower ends of the side beams 9. has been done. By this,
The transmission of forces for horizontal feeding of the embroidery grid takes place at the corners of the embroidery grid, so that a precisely linear movement of the embroidery grid takes place without diagonal movements, in other words without tilting. In the illustrated embodiment (・te,
The guide rail 15 is designed as a U-shaped profile, and at the upper and lower ends of the guide rail are fitted profiled rails 25, 26 with guide surfaces, to which roller pairs 23, 24 are attached. are consistent. Optionally, pairs of rollers can also be arranged in a similar manner in the intermediate region of the guide rail 15.

It is also clear that in this case a roller is provided whose axis of rotation lies at right angles to the guide rail, thereby ensuring a precise alignment of the embroidery grid in the vertical direction. Guide roller pair 23
．． The precise positioning of 24 and the corresponding alignment rollers can take place in various ways, in which case a special configuration of the profile for the side beams 9 can also be involved. Second
In the upper part of the figure, only the hollow profile for the side beam 9 is shown. Here, the guide roller pair 23.2
It has an appropriately lengthened side structure so that it can accept 4.

It is important and important that a guide rail for the side beams of the embroidery grid is provided, on which a support 16 projecting at right angles and guided horizontally in a stationary machine part can be bent. , thereby forming a T-shaped component;
This component ensures that the stability against inclinations, and therefore the angles, are maintained precisely in the plane of the embroidery grid. The longitudinal rails 11 of the embroidery grid frame 1 can be designed accordingly to be weaker and therefore additionally m
t can be saved.

In the illustrated embodiment, the embroidery grid is located on the side beams 9.
, 10 and a rail 13 located between them. Of course, guide strip 7
are arranged in each case in the area of the vertical support member 2 instead of a traverse, so that the guide strip 7 directly connects to the guide member 4
It is also possible to combine with In this case, the structure according to the invention does not require continuous traverses, but the field height is adjusted by means of a suitably reinforced vertically movable dam drive arranged on the respective support member 2. It is sufficient to arrange the guide strip 7 according to the invention. Since material for this long traverse is omitted,
1 dispersion is further reduced. As a result, the load on the embroidery machine is still reduced during operation with a vertical motion, so that the rotational speed of an embroidery machine constructed in this way can be increased even further.

Furthermore, by omitting the traverse, there is the advantage that the overall machine size can be reduced in relation to the size of the embroidery grid and the smooth interlocking of the grid, compared to embroidery machines with a traverse. This reduces the height of the space by 2 compared to an embroidery machine with a traverse.
It can be as low as 5%.

For reasons of clarity, the lateral guides of the embroidery grid are not shown in the drawings. However, the presence of these lateral guides is self-evident since the embroidery grid must always be aligned vertically, but since there is no load on the embroidery grid frame at right angles to the plane of the embroidery grid frame, Here, the following explanation will be omitted. In the case of the invention, the embroidery grid frame may be designed to be strong only if this is necessary for transmitting horizontal forces and for holding the beam for the product. In FIG. 1, the side beam 1U on the right side of the outer frame 1, in other words, the side beam 1U on the opposite side from the automatic embroidery operation unit and even the drive unit, and which is not rigidly connected to the guide rail, is also compared with the configuration of the present invention. can be designed to be weakly targeted.

It is necessary and important that the arrangement according to the invention always maintains a precise angle in the embroidery grid frame, that is, that the horizontal elements are always aligned at right angles to the vertical elements. In other words, the plane of the embroidery lattice is not oblique. This is precisely achieved in that the guide rail 15 and the support 16 arranged thereon are associated with a stationary machine frame.

In the case of particularly long embroidery machines, the component 19 considered according to FIG. 1 or FIG. It is also clear that they will be assigned to each.

However, experiments have shown that even in the case of embroidery machines of relatively long construction, it is sufficient if the component 19 is arranged on one side of the embroidery grid.

When using a conventional conventional drive, the support element 2 shown on the left in the drawing must be arranged on the outer side of the left-hand end of the embroidery grid, that is to say directly to the side of the guide rail 15. Must not be. This thing is a rack”
This is necessary because the mD 71S must be mechanically transmitted from the automatic control in a straight line. The above-mentioned arrangement of arranging the guide strip 7 directly on the support element 2 can be achieved, for example, by the rack 5 or 18 and the pinion 6 instead of the drive for the horizontal and vertical adjustment movement of the embroidery grid as shown and already mentioned. Alternatively, it is particularly advantageous to provide a drive with a stepper motor, a hydraulic drive or the like. In this case, the support member 2 is connected to the embroidery grid and thus to the guide rail 1.
5 can be moved in a central region, so that the guide strip 7 can be fixed directly to the guide element 4, which does indeed slide along the support element 2.

The embodiment shown in FIG. 4 allows existing embroidery machines to be easily retrofitted. Such conventional embroidery machines have two
Horizontal drive is provided via two horizontal racks.

The embodiment according to FIG. 4 differs from the embodiment according to FIGS. 1 to 6 in the following points. That is, the two supports 32, 33, which are strongly connected to the guide rail 15 against bending, do not protrude into the embroidery grid frame, but are bent horizontally away from the embroidery grid in the embroidery grid flat curve of the guide rail 15. 1 drive pinion 36 for horizontal drive
This is within the range of a conventional vertical drive shaft 35 having a . Instead of engaging the typical racks of conventional drives, the binions 36 engage rack profiles 34, each of which is fixedly connected to an assigned support and Most of the fittings are connected to the guide rail 15 and essentially form a component of the bending strength component 19 according to the invention. In principle, in principle, in such an embodiment the racks already present in conventional embroidery machines are reinforced - extremely strong supports are extended by means of rack profiles fixed to them, and in this case the racks According to the invention, the profile is strongly connected against bending to the guide rails holding the side beams 9 of the embroidery grid frame.

The guiding of the supports 32, 330 along the stationary machine frame takes place in much the same way as in the embodiment of FIG.
A pair of idle rollers 21. for guiding the supports 32.33.
The only difference is that 22 is fixedly supported on the machine frame and supported on both sides of the rack profile 340.

Effects of the Invention The advantage obtained by the invention is that a horizontal movement acting over the entire height of the embroidery grid is obtained stably, and this stability does not result in twisting.Furthermore, the movement of the horizontal movement It is introduced uniformly into the side beams over the entire height of the embroidery grid and independently of the respective flattening position of the embroidery grid.This eliminates the need for special reinforcement of the corner connections of the embroidery grid frame. The bending-resistant T-shaped component formed by the guide rail and the support provides torsional stability of the embroidery grid in the plane of the embroidery grid, in short the embroidery grid To ensure that the corner angles of the frame are maintained accurately, it is important in this case that such components reinforcing the embroidery grid are not moved together during the vertical movement of the embroidery grid, and this is achieved.

The design according to the invention not only allows a single coated support to be significantly shortened in its dimensions, but also allows such a coated support to be dispensed with altogether. This is because short spaced guides are sufficient to adjust the height of the embroidery grid.

The embroidery grid frame itself, in the case of the embroidery machine according to the invention, does not have to be designed to be stronger than the embroidery grid required for the transmission of horizontal forces and the retention of the product beam. The embroidery handle and thus also the side beams opposite the drive can be designed very compactly with this design.

The construction costs for implementing the design according to the invention are extremely low, the material costs are low, and the embroidery machine constructed according to the invention can be driven at relatively high revolutions per minute. The maintenance work is also reduced.

FIG. 1 is a schematic front view of an embroidery grid of an embroidery machine according to the invention, FIG. 2 is a partial plan view of the embroidery grid of FIG. 1, and FIG. 6 shows another embodiment of the embroidery machine of the invention. FIG. 4 is a front view of the left side portion showing still another embodiment.

1... Embroidery grid frame, 2... Supporting member, 3
... Traverse, 4... Guide member, 5... Rack, 6... Binion, 7... Guide strip, 8...
Guide roller, 9, 1 (J... side beam, 11...
・Vertical rail, 12... Beam for product, 13... Rail, 14... Support member, 15... Guide rail, 1
6... Support body, 11... Binion, 18... Rack, 19... Component member, 20... Rail, 21.22
...Guide roller pair, 23.24...Roller pair, 2
5.26... Molded rail, 27... Corner reinforcement material, 2
8, 29, 32゜33... Support, 34... Rack molding material, 35... Driving q... Wide... tq--. -No L.

Kozue A-fi 5 houses ; 32, 33...Shobutsu

Claims (1)

[Scope of Claims] 1. An embroidery machine having an embroidery grid that is movable in vertical and horizontal directions via a drive unit, wherein the embroidery grid has an embroidery grid frame whose periphery is closed; of the type in which the embroidery grid frame is supported by a support which is moved in height by a vertical drive, and the horizontal drive is adapted to act on at least one lateral beam of the embroidery grid frame. In the invention, at least one lateral beam (9, 10) of the embroidery grid frame (1) is held movably in the vertical direction on a guide rail (15), from which at least one side beam (9, 10) One horizontal support (16 or 28.29 or 32.33) projects, which together with the guide rail (15) forms a bend-resistant T-shaped component. and the support is guided horizontally along a stationary machine frame, and horizontal drives (17, 18) are connected to the guide rails (
15) and a support (16). 2. The length of one or more supports is the same as the guide rail (15
) The embroidery machine according to claim 1, which is longer than half the length of the embroidery machine. 6. The length of one or more supports is the same as the guide rail (
15), which corresponds to approximately 1.5 times the half length of claim 2. Embroidery machine listed by TJl. 4. Projecting from the vertical idle rail (15) are two horizontal supports (28, 29 or 32, 33) extending parallel to each other at a distance, each of which provides a strong bending guide. Embroidery machine according to one of the claims 1 to 6, characterized in that it is connected to a rail (15). 5. Number of cars or multiple supports (16 or 28°29)
In each case, one horizontal stationary rail (20) serves for guiding the stationary machine frame along the stationary machine frame, and at least the cantilevered end of the support or supports and the vertical guide rail (15 ), a pair of guide rollers (21
, 22) is supported. The embroidery machine according to any one of claims 1 to 4. 6. The horizontal drive unit (17, 18) is connected to a single support (16
) or supports (28, 29) are engaged in the idle rail (15), and the support (16 or 28, 29) is parallel to the embroidery grid plane. An embroidery machine according to any one of claims 1 to 5, wherein the embroidery machine is connected to the embroidery grid and extends into the range of the embroidery grid. Z horizontal drive unit (17, 18) is the guide rail (15)
The embroidery machine according to any one of claims 1 to 6, wherein the embroidery machine is arranged approximately at the center of the length of the embroidery machine. 8. One or more supports (32, 33) project horizontally from the guide rail (15) in the direction away from the embroidery grid frame (1) into the plane of the embroidery grid frame, at least one of the supports being rack-shaped. horizontal drive section (35,
36) are engaged, and one or more supports (
32, 33) along a stationary machine frame, a pair of idle rollers (21, 22), which are supported on the machine frame, at least in the region of the ends of the supports, are connected to one or more supports (32, 33). 33) or rack molding material (3
4) The embroidery machine according to any one of claims 1yi to 4, which is supported on both sides of the embroidery machine. 9 The side beams (9) are supported inside the guide rails (15) via rollers (23, 24), and each pair of rollers (23, 24)
9. The embroidery machine according to any one of claims 1 to 8, wherein the embroidery machine is arranged at at least the upper and lower ends of the embroidery machine. 10. The guide rail (15) is formed as a U-shaped cross section, and the formed rail (25, 26) has a guide Im over the moving length of the roller pair (23, 24) around the end sb of the guide rail. An embroidery machine according to claim 9, wherein the embroidery machine is installed.